Carbureter.



. .2sHEETs-sHEEr1.

y A um Ny X "f/ i H967 lign ' iii Patented Mar. 18,1919.

l 2 SHEETSAHEET 2.

come a. Kan'rnieisna, or cnIcAGo, ILLINo'Is; AssI'cNoit, isz manor im iiriisnr:v ASSIGNMENTS, ro van coma-NY, or carcasa, rrriinois, mantenerme or minors. f

. oaiauniirna.

To @ZZ whom z't may concern:v y

Be it known that I, JOHN J. KARTHEISER,

la citizen ofthe United `States, and a resi-y dent of Chicago, iii the county of Coolr and State of Illinois, ,have invented a certain new and useful Improvementin Carbureters, of which the following is a specification. This invention relates to carbureters.

lThe primary object of the invention is to provide a carbureter vconstructed y'and arf ranged for properly lproportionin'g the quantities of 'air-and hydrocarbonsupplied i to'the carbureter toproduce practically a uniform explosive mixture .of high efiiciency under allconditionsv of Vhydrocarbon feed, for which the carbureteris designed and adapted; and' to provideeilfeetive means for thoroughly breaking up or vaporizing the hydrocarbon and for thoroughly mixing the liydrocarbon'vapor and air.

A further object of. the. invention. is to provide, in connection with the carbureter aie line 2 2 of rig. 4.

` the line 4-4 of Fig. 3.

.6 6 of Fig.- 1.

proper, what may be designated an auxil-v iai-y carburetor particularly designed and adapted for use in starting the engine and fort idling, that is for 'running the engine at slow speed when it is .standing still, whereby the engine-may be kept Warm,'even in cold Weat'lier and may be quickly and conveniently started regardless of Weather' con-` ditions. l Y Y Y ,To effect the foregoing objects, 'a carbureter` of my invention comprises the various tails of construction hereinafter described and claimed.

In the' accompanying drawing in Which,v my invention is fully illustrated,

Figure 1 is a side view carbureter. q l

FigA 2 isa sectionalelevation thereof on of my improved "Fig 3 is a sectional elevation thereof on the,line 3.-3 of Fig. 4.

Fig. 4 is afsectional elevation thereofon Fig. 5 is a-top plan view of my improved carbureter with the manifold connection removed.` l

Fig. 6 is a sectional planv-i'ew on the line "Figa v and 8 are sectional bottom-'plan the nozzles froiii'a Snecicatidn of Letters Patent. t `Pgylggsnted Mar.' 18, 1519. Application ined June 1,1915. serial 110.31444, v

on the. line iran fsrariis ATENT QPF-ICE fchamber A directly with the. manifold Aor manifolds. j

. My improved carburetor is of the multiple jet type, comprising a plurality vof separate.y

nozzles and lcorresponding air admission openings, so arranged 'and controlled that they maybe brought successivelyy into com` munieation with the mixing chamber A". As shown, there are five separate nozzles designated, respectively, 2, 3, 4,5 and 6 located in separate'air admission passageways 2', 3', Land 6'." H- drocarbon is supplied to y passageways? formed in a .fitting 8 'whic assliown., is removably secured to the lower oat reservoir A through v v l y end' of the body portionV ofthe carbureter, y

said fitting being skeletoned to permit air to pass the same freely land enter the air admission passagevvays 2,'3, 4f, 5 and 6.

As .compared with hydrocarbon suipply my nozzles heretofore used, the nozzles o vimproved carbureter. are characterized the feature that the jet orifices thereof relatively much smaller, which inscombination. with the sepa-'rate -air admissioiipasare'.

sageways'thereforandthe means for-bring ing -the same" separate y and siiocessi-vely into communication with the mixing chameconomy of hydrocarbon.l

My invention contemplatesthe use .of any- .de'sired or. approved form of float reservoir ber A", obviously renders it possible to pro- A andthe same need not therefore, be describeed',y in detail.

In order to provide for varyingthe. l

i portions of air and 'of hydrocarbon so' as t9 nic'ation Awith the Imixing chamber, which hydrocarbon` from' said nozzles. as sa'dsno-f tion is increased or decreasedijlnythe i vair admission vpa'ssageway 2,but inveiI y tioncontemplate'sthe use .of valvesifgr" thuvJ-n controlling any desired nnmber-o's'ald pasffjl produceanexplosive r'nixtilx'e-,Which shall `be l riche'mor. poorerin hydrocarbon as may-Ibe-` desired; means' are provided for varyingthe effectivefsuctions.exerted on the no'zzlesbyjgv the motor when said nozzles are in comnilis" will operateto draw relatively'morefor'l erable construction shown, said .meansf'eon sists of a' valve which-controlsfthementral sageways. Wlth this. construction iti-is viousithat, if only the-airpassageway'ieljf in communication with the mixingrchambcr IA Partly fClOSing th valve which controlsv said passageway, will reduce the Ysize of sa'idf :air admission'fpassageway and will increase' the suction-onithennzzle 2, thus increasing c the relative; proportion of hydrocarbon and'- producing` affich mixture. On-the` other" hand, opening, saidA valve` willi "redno'e 'the su'ctionf 011- isaidi njet fnozzle and will 'increase' the relative qantity offain,vthusfproducing"- the TA, l l. n controllingf'said an?? edmissln @pass nozzles', increasing the propox'tiringv of hydro* Avalve y when'the throttle lever is turned-fpivotally toclose the throttle valves. l

Pivotal movement ofjthe lever 11 in the 1 direction to open the valve 9 is limited by means/ofanadjustable stop, which, in the case-offen automobile,is adapted to be opershown, 'seid stop consists of a button 17 see test wi' '1,18whiclrextendsthrowgh a ever hek/farmacie nomi-waa mmmtumariymj isi" l @summoned wir perating'- to-llmi't the ip vdwjl l of said lever under the of'y e' ring 13,' asshown, the buttoi 17 isad'justah y se- *curedto saidwire 18 by means of a set- 9 against the force of thesping13,

yatedsbymeans of thev driver ofthe car. As

screw whereby said buttonmay-be nickly and conveniently adjusted toward an from 'the post 19 to bring'saidl button in proper relation to'said postt Eadwise movement issdspns 'prevented by ywhich said wirefpasses'and whichfxtnds to Within'y a short 'distance ofthe stop 1 5 'and' 6 and thus theeno'zzl'e's 2,33, 4, 5 and 6 and the discharge opening `1 are Vcontrolled by staatl@ throttle vai-ves, rilevava which .@arbonfand' by'fredsing-the@ smeet@ Size of theair openingg'correspon" ingl reduc# richer, ori= lenenimixture as said valve is closed orfopenedzfgxf 4i Whilermy'ff vention contern vlatesjthe` use of. any'gdesiredorapprovedf rmof-'fvalve for thus .controllingsaid air admission' 'pas sageway, I prefer the'form otvfalveshown in the drawingswhich=consists"of a plate 9 litted to andj-movable fendwise in yguideK ofthe carburetor. A spring 13 which :con-1 nect's the 'outer end of the: lever 11 with a fixed part of thecilrbpreter casing -will oper; ate to impartppvotal' movement to the lever `11 inga direction to open the valve 9. The edge 16 of the lever 11, between thispivot `and vthe end thereof which is connected to the valve 9 forn'ls a cam surface which cooperates with the throttle lever to close the ing theproportir of".l air, :thus pr ncing a rconnected thereto' controls said air admissin'passageways and jet nozzles being constructed andi'arranged for opening and 'closing said airt'adrnission .passageways separately and insuccession. As shown said valves and the-means for oplever-mounted' on the steeringgpstof the foamnotishc'wm bucklingof sai'dlfwire being cans of a tube'fl throiigh.

The air'ad'mission passageways' 2^, 3 42',

eratingthe same/are 'as follows pExtending across the 4mixing'chaniberA and havylngbearings in the side walls of the body portion' A of the carbureter are shafts 2l and 22, the outer endsof said shaft vbearings being preferabl A closed to' prevent leakage around' same. ounted 'on said shafts, rev spectively, are what may' be appropriately C lesignatec'l shutter valves23land 24s, and 25 `-and 26. Pivotal movementfin posite di,-

rections-that is, toward *and other-isadapted to "be i imparted *to the shtter valves 23 and24, and' 25-V and 26"by means ofoperative connectionwitlia'stub shaft 27"mountedto rotate in suitable bearing formed movable sidewall a ofthe carbureter casing and a' bearing plate a?! secured between said removable side `wall z and the side'of the carbureter. .Oscillatory movement isadapted to ibe imparted to said stub shaft 27 by meansof a-usual operating mechanism, c0m- -prisin a crank arm `or lever 28 secured lto said s aft soas to rotate therewith, and a connecting rod 29 attached to said lever'28. vAs shown, the shutter valves are opera-A tiv|ely connected with the shaft 27 inthe fol lowinginannen-Sccured to the stub'shaft in annif-set portion fa" ofthe reesencias the shaft 21 intermeshes with the pinion 36s on the shaft 2 2 and the pinion 35- on the shaft 21 intermeshes with the pinion 37 on the shaft 22. Theshutter valves 28 and 26 and the pinions 34 and-37 are secured. to ro?.

tate with their respective shafts, as by pins l 38, .while the pinions 35 and 36 are -mounted to turn freely on their shafts and are se curedto rotate with the shutter valves 24 and 25, mounted on said shafts, respectvel.

With the'described construction it iso vious that oscillation of the stub 'shaft 27 will o erate to impart pivotal movement to *the va ves of each pair of shutter valves 234 and'24, and 25 and 26, toward 'and from each other.

The airx passageway 2 communicates with the mixing chamber at a point directly beneath the meeting edges of the shutter valves 25 and 26, when' said valves are closed, whereby the initialmovement of said shutter `valves 1n opening will uncover said passagevway 2 so that the suction'of tlie 'motor will operato, to draw a mixture of vhydrocarbon vapor and of air into the mixing chamber I from Said air admission passageway and the .nozzle 2 klocated therein. As shown, also, the passageways .3", 4', 5 and 6 communicate ,with the mixing chamber A at pointson .o posite sides of said mixing chamber anda ut e ual distances from the meeting edges t ofthe s utter valves 25 and 26 when closed, said passageways being arranged two onl Noach' side of said mixlng chamber. To

' v a in succession, as said shutter valves openand close, openings 39. and 40 are formed 'in yprovide for opening and closing said air dmlssion passageways 2', 3', 4, 5 and 6 the'edges ofthe shutter valves 25 and 26, respectively, in line with an air admission r4,'passageway controlled by said shutter valves,

`respectively. As shown, the opening 39is in line-With the air admission passageway 3 controlled by thel valve25 and the opening 40 with the assageway '-l controlled by the valve ,26. lso formed on` said shutter valves, in line with .said openings 39 and 40,- are rejections 41, 41, which are of substantiall) the 4same size as said o )enings,'re spective y,' and lare adapted to t into said holes or openings' when said shutter valves are closed.' Said openings 89 and 40 and projections dl1 and 41 are made of different operative lengths circumferentally of said' shutter valves,s0 that lat a desired interval i respectively.

of time before or after fullopening ofthe passageway 2'; preferably immediately vafter full opening thereof, -the inner end of the opening 39 will begin to' pass over the air `admission. passageway 3', and, in like man@ ner, thev inner end of the opening'fl-O will A With the described constructiomitis ob! :vious that the quantity of hydrocarbon feed to the engine may be regulated with great precision and nicety and also that the pro-l portion of air and hydrocarbon vapor may be accurately varied to produce an eli'ective mixture.' ,y

v. lWith ythe described construction, it is also obvious that, when the lever 28v is turned to separate or open theL valves 25 and 26 a sulicient distance to open or close the air admission passageway 2, the shutter valves 23 and 24 which control the discharge opening'l will be opened a corresponda -distance, and that the opening of said s lutter valves will continue as the turningxor" the operating lever 28 continues, so as to open in succession the air passageways 3', 4t', 5 and 6. Due-to the 'fact that the sizeof the discharge opening 1 from the carbureter is thus graduated to correspond to the opening oruncovering of different numbers o-alir admission passageways, it is obvious that the mixture,l in the chamber A.- will pass through thewdischarge `openin from the carbureter at a high velocity, wich willcanse the'particles oi' hydrocarbon to strike the shutter valves 23 and 24, the impact operating to break up said particles of hydrocarbon. Also, as the air. and hydrocarbonvapors pass out of the carburetor, theyv will converge' toward-the contracted' discharge opening, therebyv ellf'ecting an intimate association and intermixing thereof, which will produce a uniform explosive inirgtu'reolhigh etliciency.

Preferably, also, 1' supplement the breaking up and mixing action of the shutter valves 23 and 2l by baliie plates which extend across the' mixing chamber A between the air admission openings andthe discharge opening and which are adapted to impart an eddying -eect tothe currentvofmixed air and hydrocarbon vapor, passing through said mixing chamber, the impact of 'the hy-` drocarbon particles against said bathe plates operating to break` up and finely subdivide the same and the eddyingaction produced thereby operating to effect a thorough 'mixright vangles thereto, the inclination of said trolling the vforce of the spring 13 4applic pim Ibeing', such that they" win4 diver-t' the current passing'from the air admission openings to the, dlscharge opening, breaking it upinfo a number oli-conflicting currents, which will produce the eddying and mixing elect desired. .My invent-ion, however, conlaminates the use of any desired or approved form oi baille arranged in any desired manner.

As previously stated, the throttle lever 28 coperates with the cam surface 16 on the ki'sturr'ied to closethe throttle valves 23,24, A 25` and 2 6, the relation being-such that turningsaidthrottle lever lto fully close the throttle valves will. also fully close the v'valve 9. The relation issuch also that,when.the

l throttle lever is turned to openthe throttle tia ' features valves,- said throttle lever will releasethe 11 thus permittin 'saidspring to turn saidlever 1l to open t. 1e valve 9. `As prey lever viously stated however, the extent of opening of said valve 9 Aby t 'e'springl13 may be regulated and controlled by means ofthe stop 17, so that, even when thethrbttl'e valves areaulljv opened the. opening of-thevalve'B..

belimited as desired, or wholly or,par

sprlng 13.

While I consider the use of the-valv`es23 A n As shown, said valve. 47 is adapted to be and 24 as preferable, as regards most of the -of my improved carbureter, said valves are notessential and may be' omitted w'thout departure from the invention.

heobject of my invention, as it relatesftd p1ovidin, 1;,v an auxiliary carbureter partlcu, lai-ly designed and adaptedforuse' 1n starting the engine and for idling, the. construction 'of my improved carbureter is as follows ;-For`med in a wall of the cwbureter casing A and extending through the same from top to bottom isa hole or passa evvay` which is preferab y env larged as shown at 45 and formedat the upvalve chamber-provided mi 44, the lower end of per end of. which is a with a., valve seat 46 being controlled in th be described. Exten 1n a jet nozzle 48 whichis secure .in the tting 8 `and reservoir A? by means4 of. 'a which forms'a continuationof t ways 7 through which hydrocarbon is sup' plied to the jetnozzles of the main carbureter. l

The valve 47 is provided with a valve stem' 49 which is movable endwse in s. bcarinfr i D formed m a screw plng'O which closes the' outer end of the valve chamber 51 formed atthe upper-end of the passageway 44, said closed' "against the force, of. the

adapted to ride on a onv the upper edgeof tension 57 of the screw plug 50, the relation for a `valve 47,'said valve` l manner presently to upwardly intuitieenlarged lower end 45.0 said assageway, is

which communlcates\.with the float` assageway'V e passagevalve,` being maintained normallyfclosed i means of a spring 52 inserted between the screw plug and the upper side of the valve 47- andjwhich surrounds the vvalve stem 49 as a guide.

5l is a pipe. or tube which extends across the discharge opening 1 fromfthe mixing.

. y1o Communicating with the `valve chamber' chamberkA, above the shutter valves and 24 andvwhich is provided with holesor openings 54 through which said plpe communl- Cates witlrsaid discharge opening. When the valve 4? is closed, communication between communication with the passingewa)7` 44' so? that the suction ofthe motor will operate in the usual manner to'gdraw a supply.` of air and hydrocarbon vapor' through the fopen lower end of the passageway 44 and fromy the jet nozzle 48, which 'will -form an explosive mixture, the supply of.which will be suliicient for running the-engine. When said valve 47 is only partly o ened, a cle/an mixture will be formed whic however, will be. sufficient for running the engine when idling.' Also, when saidL 'valve is fully opened, the explosive mixture will be rich in hydrocarbon thus providing a priming charge by means ofwh-ichthemotor may be quickly and convenientlyv started.=

operated in the followingjmanner :--`Secured :1n-the end of the valve stem'49 which projects above the screw plug 50 and projecting is a Wire 55 which is.

laterally therefrom cam surface ,56 formed an upward tubular exbeing such that, as said valve is turnedv iv- ,otally in one direction, the valve 47 wil be raised to open the'saineV a ainst the force of the spring 52, applied t creto and when `turned in theopposite direction will permit vsaid valve to be vclosed bysaid spring.

A -To prevent the valve stem 49 from ecckxing and binding in its bearings, which mlght interfere with valve stein so asto engage both of said cams.

As previously stated, the valve 47' `will `be maintained normally closed by" means. of the spring. 52 appliedV thereto," with thejwre 55 restin In accor ance with n provided for operating said valve, whereby when the throttle and 26v are closed,y said valve 47 will 'be opened. Asshown, the means ,for thus opcning said valveare as follows' r-Pivotedjtc a of, duplicatecam surfilces 56 are provided fon opposite sides of said valve stem, and the rod orv wires projects at both sides ct' the on the low pointsof the Garnett..v i i my invention, means atraiga valves 28. and v24, and 25.

iso

- iigid part of the body portion `A-of the carbu'reter-v is a bell crank lever 58 one arm ofI whichisconnectedpto the rod 55-secure'd in the valve' stem 49 by a link 59 and the oppo- 5 site'end of which projects into the path of movement of an upward extension 60 'of the throttlel lever 28, when the valve A47 is closed and the throttle .valves .are open, sothat turning the throttle valve` lever 28 to close saidl throttle valves will operate tpturnjhe valve stem 49v and thus, through said rod 55 and the cams 56, tar/aise and open the valve47. y

To provide for varying the angular moveing of the valve 47 by the throttle lever extension 60, means are provided for adjusting.

the point of attachment of the link 59 to the rod or wire 55. Asshown, said link 59 is connected directly to a block 61 .provided with a hole or opening -through which the rod 55 extends and whichis adapted to bc at 63. f

Pivotal movement is adapted to be imn parted to the' valve stem 49 to wholly or partially open, said valve by meansof a wire 64 which asses freelyl through a hole formed in thehlock 61 and-adjustably secured to which, as by means of a setfscrew,

' is a button 65. Endwise movement is adapted to be imparted 'to the wire 64 by, means -of a usual lever, which, in the case of an automobile, is mounted on the steering post.

`, ofthe car, not shown, so .as Ato, be conveniently accessible to the drive of the car, buckling of said wire being prevented by means of a tube 66 through which said Wire passes and which terminates a suiiicient distance in L front ofthe rod .55 to provide vfor desired v u) pivotal! movement of the valve stern 49 open and close the valve 47'.

In some types of engines, particularly eightcylinder engines,'t h'e :cylinders comprise series connected to theI carburetor by means of separatel manifolds which, however, communicate with a common discharge openingfof the carburetor: `This is objection'ablefor th son that itis `found in practice thgtltlee:auctions-ofw t'ie cylinders-` willoperate not only tojdraw explsixemixture from' the carburetenbut will also oper- 'A ate to draw or steal explosive mixture ment of the valve stem 49 andthus the open` Also to provide for varying-the,

tions connected by a turn-buckle indicated casin "provided with a mixing chamber, a

from the branch'of the manifold which supplies the other cylinders, whereby the initial suction'of the cylinders will act on a highly I'areied mixture which may result in an insucient supply of explosivemixture being 70 furnished to the cylinders 'to develop the full designed eiicency of the motor.,

`To overcome this objection, where the manifold connection, designated as a Whole '67, comprises separate branches, I construct 75 A said manifold connection with. a depending plate 68 which is adapted to extend intothe discharge opening l of the carburetor when' Said manifold connection isattached thereto and to divide the sameinto separate passageways or chambers, which respectively connect the mixing chamber A of the carburetor. with different branches of the manifold connection, thus insuring that the .supply of explosive mixture for said cylinders will always be drawn from Athe carl 'buretein secured' in Vany desired adjusted position Igclaimai ,i f c l. In a carbureter, the combination of a Y casing provided with a mixing chamber, a 90- plurality of air admission passagewaysand a discharge opening, nozzlesin said air ad-v mission passageways which communicate with a source ofhydrocarbon suppjly, ay' valve which controls said air admission pas 495 sagevvays, and means for' varyingthe suc- Y tion exerted on the exposed nozzles with the suction of the fmotor 'remaining iuniform,

saidV means comprising a separate-,valve which controls oneV of said air-admissionli passageways, substantiallyas describedzf- 2. In a carburetor, the combination-.of 'a plura ity of air admission'passageways and .a discharge opening, nozzlesin said passageways which cormnunicate with a source of hydrocarbon supply, a valve which controls saidair adnnssion passageways, means for varying the-'suction exerted onthe ex- -posed nozzles with the suction of the motor remaining uniform, said means, comprisin a separate valve which controls one of sai .air admission passageways, a spring applied thereto for opening the same and manually operated means for closing said valve, snbstantially as described.

f3. `.In a earbureter, the combinatienxof'a` casing provided With a mixing chamber, a plurality of airradmission passageways and a discharge' opening, nozzles in said pas* 129:@ sageways which communicate with a source ,of hydrocarbon supply, a valve which 4controlssaid air admission passageways, a sep- ,arateivalve which controls one of said air admisslompassageways, a spring applied said valve for; opening the same, 'and mcrns for closing sai p valve controlled b vymove-v` ment of saidlthro tle valve to close the same,

substantially as described.

4. In a carburetenfthecombination ycfa 13 0.A

casina provided with a mixing chamber,^a

plurality of airadmission passageways and lever *adaptedforjopening saidslide valve',

a discharge opening, nozzles 1n saidv passagewa s ywhich communicate with a source of hy rocarbon supply, -a throttle valve which controls said airadmission passage- .Wa'ys, means for operating the same com-l pr1s1ng\.n throttlalever, a separateSlidel .valvewhich oontrolsone of said-air admis- .sion passageways,A a pivoted lever connected to saidslide valve, al spring applied. to ysaid anda cam surface formed on saidA lever which cooperates A=`With the throttle lever to close said slidevalve when said throttle lever is turned to close 'the throttle valve, substantially as described. i n, i

5. In a: carburetor, the combination of a casin provided with a mixing chamber, a plur' ity of air admission passageways and a discharge opening, nozzleszin-said air admission rpassageways which communicate with a source of; hydrocarbonsupply, a

tbnottle yvalve which controls saidarngad` :mission passageways, a separatevslideivalve Ywhich controls oneof said passagewaysfa `pivoted` -lever connectedthereto, a vspring applied-to. said lever4 for opening said slide valveand manually controlled means for imparting pivotal movementltosaid lever l frlosinasaid slide valve, substantially as n described, s

Ina carbilreter, the.combination of a casing provided with a mixing chamber, a plurality of air admission passageways' and ja discharge opening, nozzles in said air admission passageways which communicate with a source-of hydrocarbon supply, a throttle valve.y Whichcontrols said air admission passageways, a separate slide-valve l which controls one of said passageways,a

yhwire, substantially as described.

7. In a carbijreter, the combination of a V casingprovided with a mixing chamber; a

plurality of air admission passageways and a dischargev opening, nozzles in said air admission kpassageways Y which communicate with a .source-of-k-hydreearbon' supply, a pair of shutter valves which control said air. admission passageways, and means for -imparting pivotal movement to .said valves,

towardandfromeachother, said valves be. ing constructed and arranged tov open and close- 'saidair admission passageways in succession,4 substantially as described.

I 8. In a ca'rbureter,l the combination of a .casing provided with a mixing chamber, a f plurality of air-admission passageways and *.a Adischarge opening, nozzles in said air ad- `mission pssageWays which communicate Awitha source fof hydrocarbon supply, a

Ypaii'- of shutter valves which control said `air admission passageways, and means for y'imparting pivotal movement to said valves vtoward and from each other, said valves `-being provided with openings of different operative lengths inline with different air admission passageways, therelation being such that as saidv-alvesopen and close the air fadmissionwopenings will `be opened and clofsed in SCCGSSOD; Substantially as dcsorlbedf, v l

air .admission opening and.a'd 1scharge open- 1ng,a nozzle 1n said a1r.`adm1`ss1on opening which communicates with a source of 'hydrocarbon supply, v a f shaft rotatably mounted' in the walls" of the carburetor and which extends across the vchamber .therein, means for rotating saidshaft, ay pair of shut- Y 4- 9. In a carbureter, the combination lof a, casing provided with afmixing chamber, an

ter valves mounted onsaid shaftand" which .control the airadmission passageway, one` of said valves being secured 'to rotate with said shaft and the other beingloose thereon, and gearing connecting said shaft with said loose valve, the relation being such that rotation of said shaft will impart movement .to .said shaft' toward 'andI fromk each other, substantially as. described.- i

. 10. In a carbureter, the combination a casing providedwith a mixing chamber, .an air-admission opening and a discharge open'- in'g, a nozzle in said ai'r ,admission opening whichcommunicates with a source of hydrocarbon supply, shafts rotatably mounted in the walls ofthe )carburetor and which eX- tend acro the vmixing chamber therein, 'means for'rotatingsaid shafts and a pair of shutter valves'which" control the air adico mission passageway lmountedon one of said shafts,.one of said valves begingpsecured to rotate with said shaft'and the other 4bei-ng `free to'. turn thereon, and gearing connecting said loose valve,fwith the other' shaft, 'the' relation being suchy that lrotationI of.l said valves toward aridifrom each tially as described. v

11. In a carbnreter, the combination of a casingv provided with a mixing chamber, an airadmissionopening and a discharge opening, anozzle in 'said'airadmission opening whichpom'municateswith a source of hydro- .cailgiigsupply shafts rotatably mounted in the :Walls of theffoarbureter; and which eX- A tend-A across tlh'e mixing-chamber therein, pairs ofshutte'r valves., mounted` on 4said shafts, respectivelypone pair offwhich convtrolsi', heair admission-passagewayjand the valve shaftwillimpartmovement to saidother, substanof which projects intotlie :itli oftrayel of as my invention, I affix my signa-ture in the n4 projection on tlxe'thrott e Valve lever of presence `of two subscribing "witnesses this 10 the nmiu-cz1rbureter, 'the relation being such 22'day of May, 1915.v

tlmtfmovement of said throttle lever to close the throttle valve of the main carbureter will JGHN' J' KAETHEISER' open the valve vof said axiliary carbureter, Witnesses: substantially as described. s ALEX. D. KING, Jr.,

In testimony that Iclaim' the foregoing l F. M. REICHEL. 

